"However, these attempts have failed to express functional and economical mussel adhesive proteins for several reasons, including a highly biased amino acid composition (5 amino acid types comprised �89% of the total amino acids), different codon usage preference between mussel and other expression systems (tRNA utilization problem), and small amount of adhesive produced" - Hwang

Presence of fp-5 has adverse effects on cell growth.

Positives AGK

Known sequence

Very adhesive

Has a 30% DOPA level, which no other foot protein comes close to

From M. galloprovincialis; Very adhesive; Low purification yield (but this last fact may not matter for us?)